Panasonic KW4M User Manual

368-4 Communication SpecificationsInterface Conforming to RS-485Protocol MEWTOCOL/MODBUS (RTU) (different model)Isolation status Isolated with the internal circuitNumber of connected units 99 (max.) ※1 ※2Transmission distance 1200mTransmission speed 38400/19200/9600/4800/2400bps (selectable with setting mode)Data length 8bit/7bit (selectable with setting mode)7bit (fixed)(MEWTOCOL type)(MODBUS type)Parity Not available/Odd number/Even number(selectable with setting mode)TransmissionFormatStop bit 1bit（fixed）Communication method Half-duplexSynchronous system Synchronous communication methodEnding resistance Approx. 120Ω（built-in） ※3◆Factory settingsTransmission speed (Baud rate) Data length Parity Stop bit Station no.19200 bps 8 bit Odd number 1 bit (fixed) 1※1 For RS-485 converter on the computer side, we recommend SI-35 (from LINE EYE Co.,Ltd.).※2 When using SI-35, SI-35USB or PLC from our company (which can be connected up to 99 units), up to 99Eco-POWER METER can be connected.In case using this system with the other devices, up to 31 Eco-POWER METER can be connected.※3 Change the sliding switch of main unit as a terminal station. (Factory setting; General side)8-5 Dedicated Current Transformer SpecificationsModel No. AKW4801 AKW4802 AKW4803 AKW4804Primary side rated current 5A / 50A 100A 250A 400ARated secondary side current 1.67mA / 16.7mA 33.3mA 125mA 200mAWinding (Turn) 3000 3000 2000 2000Ratio error ±2.0% F.S.Hole Dia (mm) φ10 φ16 φ24 φ36Breakdown voltage (initial)AC1000V/1min（Between through holeand output lead wire）AC2000V/1min（Between through holeand output lead wire）Insulation resistance (initial) Min. 100MΩ (at DC500V) （Between through hole and output lead wire）Functional 10～55Hz (1 cycle/ minute) single amplitude of 0.375mm(1 hrs. on X, Y and Z axes)Vibrationresistance Destructive 10～55Hz (1 cycle/ minute) single amplitude of 0.15mm(10 min. on X, Y and Z axes)Functional Min. 98m/s 2 (4 times on X, Y and Z axes)Shockresistance Destructive Min. 294m/ s2 (5 times on X, Y and Z axes)Output protection level ±7.5V with clamp element ±3.0V with clamp elementPermissibleclamping frequency Approx. 100 timesAmbient temperature -10 to +50℃ (without frost and non-condensing)Storage temperature -20 to +60℃ (without frost and non-condensing)Ambient humidity 35～80%RH （at 20℃ non-condensing）Weight Approx. 50g(Trunk cable included)Approx. 80g(Trunk cable included)Approx. 200g(without trunk cable)Approx. 300g(without trunk cable)Note) Dedicated current transformers (CT), AKW4801, 4802,4803,4804, are dedicated for lowvoltage under 440V. They can not be used for high voltage circuit. In case measuringhigh voltage circuit, make a 2-step construction by combination of a commercial CT ofsecondary side current 5A for high voltage and the dedicated CT for 5A (AKW4801).